. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. under this magnitication, but examination of its inner border under a higher power reveals their presence (fig. 2). So far as I can determine, these ova, in such a case as the last, are to be looked for near the inner border of the gonad, dorsal to the vessel—that is to say, they occur in the region of the " Nabel" * or liilnm, the original place of attachment of the gonad. Other sections show more complicated conditions. Fig. 3 represents a gonad where the main mass
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. under this magnitication, but examination of its inner border under a higher power reveals their presence (fig. 2). So far as I can determine, these ova, in such a case as the last, are to be looked for near the inner border of the gonad, dorsal to the vessel—that is to say, they occur in the region of the " Nabel" * or liilnm, the original place of attachment of the gonad. Other sections show more complicated conditions. Fig. 3 represents a gonad where the main mass of the tissue is still male, but showing clear invasion by ova. In such a case as this the testis appears to be more or less broken up and invaded by strands of tissue, •which carry the ova, in various stages of maturity, into its inlciior. A still more complicated condition is sliown in fig. 4. Here the most of the gonad is * Neidert u. Leiber, " des Amphioxus," Zool. Jahrb. (Anat.) xviii. 1903 ; Zarnik, " vou ,'' Zool. Jahrb. (Aiiat.) xxi. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original London, Taylor and Francis, Ltd
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Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
